kernel/linux.git/drivers/gpu/host1x, branch v5.4.33

gpu: host1x: Allocate gather copy for host1x

2019-12-31T15:44:29+00:00

[ Upstream commit b78e70c04c149299bd210759d7c7af7c86b89ca8 ] Currently when the gather buffers are copied, they are copied to a buffer that is allocated for the host1x client that wants to execute the command streams in the buffers. However, the gather buffers will be read by the host1x device, which causes SMMU faults if the DMA API is backed by an IOMMU. Fix this by allocating the gather buffer copy for the host1x device, which makes sure that it will be mapped into the host1x's IOVA space if the DMA API is backed by an IOMMU. Signed-off-by: Thierry Reding Signed-off-by: Sasha Levin

Merge tag 'drm/tegra/for-5.3-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

2019-06-25T02:59:43+00:00

drm/tegra: Changes for v5.3-rc1 This contains a couple of small improvements and cleanups for the Tegra DRM driver. Signed-off-by: Dave Airlie From: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190621150753.19550-1-thierry.reding@gmail.com

host1x: debugfs_create_dir() can never return NULL

2019-06-13T16:23:38+00:00

So there is no need to check for a value that can never happen. No need to check the return value all anyway, as any debugfs call can take the result of this function as an option just fine. Cc: Thierry Reding Cc: dri-devel@lists.freedesktop.org Cc: linux-tegra@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Thierry Reding

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37+00:00

Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman

gpu: host1x: Do not link logical devices to DT nodes

2019-06-05T13:06:03+00:00

Logical devices created by the host1x bus infrastructure don't need to be associated with a device tree node. Doing so will cause the driver core to attempt to hook up IOMMU operations and fail because it is not a real device. However, for backwards-compatibility, we need to provide various OF_* uevent variables that were previously provided by of_device_uevent() and which are parsed by libdrm in userspace when querying the available devices. Do this by implementing a uevent callback for the host1x bus. Signed-off-by: Thierry Reding

gpu: host1x: Increase maximum DMA segment size

2019-06-05T13:06:03+00:00

Recent versions of the DMA API debug code have started to warn about violations of the maximum DMA segment size. This is because the segment size defaults to 64 KiB, which can easily be exceeded in large buffer allocations such as used in DRM/KMS for framebuffers. Technically the Tegra SMMU and ARM SMMU don't have a maximum segment size (they map individual pages irrespective of whether they are contiguous or not), so the choice of 4 MiB is a bit arbitrary here. The maximum segment size is a 32-bit unsigned integer, though, so we can't set it to the correct maximum size, which would be the size of the aperture. Signed-off-by: Thierry Reding

gpu: host1x: Do not output error message for deferred probe

2019-06-05T13:05:49+00:00

When deferring probe, avoid logging a confusing error message. While at it, make the error message more informational. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201

2019-05-30T18:29:52+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 228 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Steve Winslow Reviewed-by: Richard Fontana Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

gpu: host1x: Program stream ID to bypass without SMMU

2019-04-11T15:40:35+00:00

If SMMU support is not available, fall back to programming the bypass stream ID (0x7f). Fixes: de5469c21ff9 ("gpu: host1x: Program the channel stream ID") Suggested-by: Mikko Perttunen Signed-off-by: Arnd Bergmann Reviewed-by: Mikko Perttunen [treding@nvidia.com: rebase this on top of a later build fix] Signed-off-by: Thierry Reding